Книга: Introduction to Microprocessors and Microcontrollers
Quiz time 5
Quiz time 5
In each case, choose the best option.
1 Which of the gates shown in Figure 5.17 would have an output of logic zero?
(a) A, B, C.
(b) A and D.
(c) B and D.
(d) None of them.
Figure 5.17 Which outputs are at logic 0?
2 If the hex number 4C is applied to eight NOT gates, the output would have the value of:
(a) B3.
(b) 4C.
(c) FF.
(d) CD.
3 Which two-input gate has an output of logic 0 when both inputs are at logic 1:
(a) OR.
(b) AND.
(c) NOT.
(d) XOR.
4 A gate is:
(a) necessary to keep the cattle in the field. (b) always operated from a supply of +5 V.
(c) an electronic circuit with three connecting wires. (d) an electronic switching circuit whose output voltage depends on the inputs.
5 Adding the input and output binary values of a NOT gate:
(a) can be 0, 1 or 2 depending on the inputs.
(b) will give a voltage around 2.5 V.
(c) always results in 1.
(d) is not possible.
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